RNX Water Systems

Water-use efficiency

Can the same water grow more food?

In a 2025 field trial, the treated plot produced 3.98 kg of maize per cubic metre of irrigation water — almost three times the control. It was one plot against one, without replication. That is a signal, not proof. We want it tested.

Discuss a validation trial See the evidence
A black egg-shaped vessel on a wooden pallet, connected by hoses to the stainless steel filters and valves of an irrigation manifold, beside an open field.

What one field trial showed

Control
1.36 kg/m³
Treated
3.98 kg/m³
Irrigation water productivity, maize, Po Valley, Italy, 2025 Horizontal bar chart starting at zero. Control: 1.36 kg/m³. Treated: 3.98 kg/m³. 0 1 2 3 4 Control Treated 1.36 kg/m³ 3.98 kg/m³ Irrigation water productivity (kg/m³) Irrigation water productivity, maize, Po Valley, Italy, 2025 Horizontal bar chart starting at zero. Control: 1.36 kg/m³. Treated: 3.98 kg/m³. 0 1 2 3 4 Control: 1.36 kg/m³ Treated: 3.98 kg/m³ Irrigation water productivity (kg/m³)
Irrigation water productivity, maize, Po Valley, Italy, 2025; same hybrid, fertilization and climate. One treated and one control plot, without replication: a preliminary field observation, not a statistically significant result.

See the full evidence

Why it matters

Agriculture accounts for around 70% of the world's freshwater withdrawals. In much of the world the constraint is no longer how much water exists, but how productively it is used.

What it is

A sealed, passive in-line system, installed downstream of fertigation. Water passes through it on the way to the field.

  • No power supply
  • No chemicals or additives
  • No filters or cartridges
  • No waste stream
  • No change to existing agronomic practice

How it works

Position of RNX NERO POWER® in the irrigation line Schematic. Water flows from the water source through fertigation, where nutrients are dosed, then through RNX NERO POWER®, shown as a sealed oval vessel, and on to the field. Water source Fertigation nutrient dosing Nutrients RNX NERO POWER® sealed · passive · in-line Field Direction of flow Position of RNX NERO POWER® in the irrigation line Schematic. Water flows from the water source through fertigation, where nutrients are dosed, then through RNX NERO POWER®, shown as a sealed oval vessel, and on to the field. Water source Fertigation nutrient dosing Nutrients RNX NERO POWER® sealed · passive · in-line Field Direction of flow: top to bottom
Schematic, not to scale. The internal design is not shown.

Who we are looking for

Research institutions

To test the effect under your own protocols. A negative result is a legitimate outcome.

Partner with us

Agricultural bodies

To find out whether it holds in the conditions that matter to your region.

Partner with us

Growers and distributors

Units are built to the flow rate of each installation.

Request a quote

We are not asking you to believe our results. We are asking you to test them.

Discuss a validation trial